An angle sensor includes a detection signal generation unit for generating a plurality of detection signals, an angle detection unit for generating a detected angle value by performing an operation using the plural of detection signals, and a condition determination apparatus. The condition determination apparatus includes a determination value generation unit and a determination unit. The determination value generation unit performs an operation using the plurality of detection signals to generate a determination value corresponding to the condition of the angle sensor. The determination value varies depending on an angle to be detected. The determination unit determines whether the angle sensor is in a predetermined condition by determining whether the determination value falls within a determination range. The determination unit varies at least one threshold value that represents at least one end of the determination range.

A system and method for managing sensors including determining health operation states of the sensors correlative with sensor accuracy, classifying the sensors by their respective health operation state, and teaming two sensors each having a health operation state that is intermediate to give a team having a health operation state that is healthy. The sampling frequency of the sensors to determine sensor accuracy may be dynamic.

Apparatuses are presented. The apparatus includes a sensor configured with an adjustable accuracy setting to measure a physical parameter and a controller configured to adjust the accuracy setting based on a threshold, and to adjust the threshold based on the physical parameter measured by the sensor. Another apparatus includes a sensor configured with a plurality of sensor accuracy settings to measure a physical parameter of a circuit in a plurality of operating regions. The plurality of operating regions is based on ranges of the physical parameter measured by the sensor. Each of the plurality of sensor accuracy settings corresponds to one of the plurality of operating regions. A controller is configured to adjust one of the ranges of the physical parameter for one of the plurality of operating regions, in response to a change of an operating condition of the circuit.

The present tool and method relate to device fault detection, diagnosis and prognosis. More particularly, the present tool and method store in a database a plurality of measured indicators representative of at least one dynamic condition of the device. The present tool and method further binarize by a processor the plurality of measured indicators, and analyze the plurality of binarized measured indicators using a machine learning data tool for extracting at least one pattern from the binarized measured indicators by adding at least one different constraint to each iteration. The at least one extracted pattern is indicative of whether the device has a fault or not.

The present tool and method relate to device fault detection, diagnosis and prognosis. More particularly, the present tool and method store in a database a plurality of measured indicators representative of at least one dynamic condition of the device. The present tool and method further binarize by a processor the plurality of measured indicators, and analyze the plurality of binarized measured indicators using a machine learning data tool for extracting at least one pattern from the binarized measured indicators by adding at least one different constraint to each iteration. The at least one extracted pattern is indicative of whether the device has a fault or not.

A field device includes a detected signal converter configured to convert a detected signal of a sensor into a predetermined voltage and then to output the voltage, an amplifier configured to amplify an output signal of the detected signal converter, and a switching power supply as an internal driving power supply of the field device.

A field device includes a detected signal converter configured to convert a detected signal of a sensor into a predetermined voltage and then to output the voltage, an amplifier configured to amplify an output signal of the detected signal converter, and a switching power supply as an internal driving power supply of the field device.

A motor vehicle computer includes an input port connected to a crankshaft sensor and a module for processing signals received from the crankshaft sensor. The computer includes: a first adapting module, suited to making the signals, provided by a crankshaft sensor of a first type, conform to an input predefined format of the processing module; a second adapting module, suited to making the signals, provided by a crankshaft sensor of a second type, conform to the input format of the processing module; a routing unit suited to connecting the input port to the first or to the second adapting module; a unit for detecting the type of the crankshaft sensor connected to the input port; and a unit for commanding the routing unit according to the type of crankshaft sensor detected.

Provided is a zero-crossing detection circuit capable of detecting zero-crossing with high accuracy without being influenced by noise. The zero-crossing detection circuit includes a first comparison circuit, a second comparison circuit having a hysteresis function, and a logic circuit. The first comparison circuit is configured to output a zero-crossing detection result of a first input signal and a second input signal. The second comparison circuit is configured to output a comparison result of the first input signal and the second input signal. The logic circuit includes a unit configured to determine whether to reflect the zero-crossing detection result to output of the logic circuit based on the zero-crossing detection result and the comparison result.

Fault detection techniques for control of sensor systems. A sensor control integrated circuit (“IC”) may include a fault detection system for coupling to the sensor supply lines. The system may detect faults for each of the sensor supply lines. The fault detection system may level shift sensor supply line signals from a first voltage domain to a second voltage domain appropriate for the fault detection system of the controller IC. The fault detection system may level shift source potential voltages from the first voltage domain to the second voltage domain to detect predetermined fault types. The fault detection system may compare the second domain voltages from the sensor supply lines to voltages representing predetermined fault types and may generate fault status indicators based on the comparison.